Hennessey family name history and map
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Hennessey in 1911 Ireland
The 1911 Census recorded 338 people named Hennessey in Ireland; roughly one in every 13,000 people carried the name. The name was split fairly evenly between men and women: 168 men and 170 women.
Counties with Hennessey in Ireland
Cork had the largest share of Hennesseys, 19.5% (66 people). Next came Tipperary (42), Wexford (39), Kilkenny (33) and Dublin (23).
Hennessey average age in 1911
The average Hennessey in 1911 was 30.8 years old, 30.0 for men and 31.5 for women; almost exactly in line with the national averages of 29.6 for men and 30.5 for women. That low figure reflects just how many children there were in Edwardian Ireland, along with high infant mortality and the limits of public health at the time. For comparison, average life expectancy in Ireland today is around 83.
Hennessey literacy in 1911
Of the Hennesseys whose literacy was recorded, 76.5% could both read and write, 3.4% could read but not write, and 19.8% could do neither. The figures were much the same for men and women. Bear in mind these figures include young children; the census itself only counted people aged nine and over when calculating illiteracy, on the grounds that it was unfair to label a child illiterate before they'd had a chance to learn.
Hennessey common first names
The most common male names were John (24), Patrick, Michael, Thomas and James; the same five names that topped the list nationally. For women it was Mary (34), followed by Ellen, Bridget, Kate and Margaret.
Hennessey occupations in 1911
The most common entry on a Hennessey's census form was "Scholar"; 16.6% (56) were children at school. Among the rest, the most common occupations were farmer (12.7%), general labourer (7.7%), farm labourer (7.1%) and domestic servant (4.4%). Grouped by sector, agriculture accounted for 20.4% of all Hennesseys, followed by general labourers, domestic service and textiles & clothing.
What religion is Hennessey?
Hennesseys were predominantly Roman Catholic (88.5%). The remainder were mostly Anglican (10.4%) and Plymouth Brethren (0.3%).
Visitor Notes
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Added by
Pete F
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Hennessey statistics (1911)
Number: 338
Rank: 1,767
Average Age: 31
Hennessey in the USA (2020)
Number: 7,726
Rank: 4,451
Note: If there were less than 100 in the USA census it will show as zero.